Finding the Fourth Proportional to 120,372,752.58, 166,165,249.14 and 81,267,497.65
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Solution
The fourth proportional to 120,372,752.58, 166,165,249.14 and 81,267,497.65 is: 112,183,477.61
Step by Step Solution
- Step 1: Write the proportion equation
120,372,752.58 : 166,165,249.14 = 81,267,497.65 : x - Step 2: Convert to fraction form
120,372,752.58/166,165,249.14 = 81,267,497.65/x - Step 3: Cross multiply
120,372,752.58x = 166,165,249.14 × 81,267,497.65 - Step 4: Simplify right side
120,372,752.58x = 13,503,833,993,996,614 - Step 5: Solve for x
x = 13,503,833,993,996,614/120,372,752.58 - Step 6: Final answer
x = 112,183,477.61
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.